// pages/recommendSong/recommendSong.js
import request from "../../utils/request";
import PubSub from 'pubsub-js'

Page({

    /**
     * 页面的初始数据
     */
    data: {
        day:'',
        month:'',
        recommendList:[],
        index:0
    },

    /**
     * 生命周期函数--监听页面加载
     */
    onLoad: function (options) {
        let userInfo = wx.getStorageSync('userInfo')
        if(!userInfo){
            wx.showToast({
                title:'请先登录',
                icon:'none',
                success:()=>{
                    wx.reLaunch({
                        url:'/pages/login/login'
                    })
                }
            })
        }

        this.setData({
            day:new Date().getDate(),
            month:new Date().getMonth() + 1
        })

        this.getRecommendList()

        PubSub.subscribe('switchType',(_,type)=>{
            let {recommendList,index} = this.data
            if(type === 'prev'){
                (index === 0) && (index = recommendList.length)
                index -= 1
            }else {
                (index === recommendList.length - 1) && (index = -1)
                index += 1
            }
            this.setData({
                index
            })

            let musicId = recommendList[index].id

            PubSub.publish('musicId',musicId)
        })

    },

    async getRecommendList(){
        let recommendListData = await request('/recommend/songs')
        this.setData({
            recommendList:recommendListData.data.dailySongs
        })
    },

    toDetail(event){
        let {song,index} = event.currentTarget.dataset
        this.setData({
            index
        })

        wx.navigateTo({
            url:'/pages/songDetail/songDetail?musicId=' + song.id
        })
    },

    /**
     * 生命周期函数--监听页面初次渲染完成
     */
    onReady: function () {

    },

    /**
     * 生命周期函数--监听页面显示
     */
    onShow: function () {

    },

    /**
     * 生命周期函数--监听页面隐藏
     */
    onHide: function () {

    },

    /**
     * 生命周期函数--监听页面卸载
     */
    onUnload: function () {

    },

    /**
     * 页面相关事件处理函数--监听用户下拉动作
     */
    onPullDownRefresh: function () {

    },

    /**
     * 页面上拉触底事件的处理函数
     */
    onReachBottom: function () {

    },

    /**
     * 用户点击右上角分享
     */
    onShareAppMessage: function () {

    }
})